Be very happy.
be on cloud nine
Be very unfriendly.
as cold as ice
Trying to get something unrealistic or impossible
chasing rainbows
To tremble from fear.
shake like a leaf
Heavy rain.
it's raining cats and dogs
to be the most wonderful and important person in the world
the sun rises and sets on you
Save money.
saving for a rainy day
After bad times always comes something good.
every cloud has a silver lining
Create a big problem out of a small one.
storm in a teacup
Be very fast.
be lightning fast
Be extremely angry.
have a face like thunder
Not paying attention.
head in the clouds